What is a major advantage of markerless motion capture using technologies like the Kinect?

• A. It is low-cost, can be deployed at home, and is suitable for exercise and activity promotion.
• B. It requires wearable markers.
• C. It has higher hardware costs than marker-based systems.
• D. It is restricted to lab environments.

Answer: (A)

Markerless motion capture shines because it is affordable and highly accessible. Technologies like Kinect use consumer-grade depth sensors and ordinary cameras to estimate body pose without the need for physical markers or special suits. This means you can set up and use the system at home, in clinics, or in gyms without the expense and logistical complexity of marker-based setups. The ease of deployment, lower equipment costs, and the ability to promote and monitor exercise or rehabilitation activities in real-world environments are the biggest practical advantages, making it possible to reach more people and support ongoing activity promotion. While marker-based systems can offer higher precision in controlled lab settings, the standout benefit of markerless systems is their low cost and broad, at-home usability.